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Donald E. Thomka — 3 Patents

AMAmoco: 2 patents #385 of 1,251Top 35%
S(Standard Oil Company (Indiana): 1 patents #254 of 576Top 45%
Romeoville, IL: #24 of 88 inventorsTop 30%
Illinois: #26,899 of 84,256 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Donald E. Thomka has been granted 3 US patents while listed as an inventor at Amoco. The first was granted in 1981 and the most recent in October 1989. Donald E. Thomka ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Donald E. Thomka in Romeoville, IL, US.

Patents per Year

Patents granted per year, 1981 to 1989Bar chart with a peak of 1 patents in 1981.peak 11981: 1 patents19811988: 1 patents19881989: 1 patents1989

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4876385 Batch or semicontinuous pseudocumene oxidation and catalyst recovery and recycle Neal R. Nowicki 1989-10-24 $11,972,000
4769488 Batch or semicontinuous pseudocumene oxidation and catalyst recovery and recycle Neal R. Nowicki 1988-09-06 $11,828,000
4260546 Aged molten color of maleic anhydride Hobe Schroeder 1981-04-07 $23,771,000

Frequent Collaborators

Neal R. Nowicki2 shared
Hobe Schroeder1 shared

Nearby-Ranked Inventors

Daniel Silion3
Hangfeng Li3
Mark Vander Wal3
Chad M. Goltzman3
Sathish Kumar Thanganathan3
Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3